/*
 * Copyright 2023 NAVER Corp.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.navercorp.pinpoint.web.servlet;

public class DefaultVersionToken implements VersionToken {
    private static final String prefix = "v";

    @Override
    public boolean isVersion(String token) {
        if (!token.startsWith(prefix)) {
            return false;
        }
        for (int i = prefix.length(); i < token.length(); i++) {
            final char c = token.charAt(i);
            if (!Character.isDigit(c)) {
                return false;
            }

        }
        return true;
    }

}
